Volume 21, Issue 1, March 2011, Pages 44-50
Saadia A. Ali; Nermeen A. Helmy; B. R. Abdel-Halim
Volume 17, Issue 1, March 2007, Pages 39-49
Azza S.A. Goda; Mona A. Mahmoud; Wafaa A. Osman; N.A. Ziada; I. M. Moussa